drawing a curve

[alirah84]

Hi
I want to draw an arc(curve) with arc function but it gives this message:
identifier "arc" is undefined
it's function:
arc(x,y,s_angle,e_angle,R);
what's the problem?

[Peter87]

Is the arc function part of a library that you use? Are you including the necessary header files?

[alirah84]

I don't know .
It's my library that i used for this program:
#include <GL/glut.h>
#include <cmath>